Formation of Aluminum Oxide

4Al + 3O2 → 2Al2O3

概要

Aluminum reacts with oxygen to form aluminum oxide (alumina). While aluminum appears resistant to corrosion, it actually oxidizes instantly in air, forming a thin protective oxide layer that prevents further reaction. Powdered aluminum burns vigorously in oxygen.

参加者

役割 物質 係数 状態
反応物 Oxygen O 3 (g)
反応物 Aluminum Al 4 (s)
生成物 Aluminum Oxide Al₂O₃ 2 (s)

日常の例

The dull gray coating on aluminum cans and foil is a thin layer of aluminum oxide that protects the metal from further corrosion.

産業上の重要性

酸化アルミニウムは研磨剤（コランダム）、セラミックス、触媒担体、アルミニウムの電解精錬（ホール-エルー法）の原料として利用される。ルビーとサファイアは酸化アルミニウムの宝石品質結晶。

特性

タイプ
Synthesis
可逆的
いいえ
エネルギー
発熱性
ΔH
-3351.4 kJ/mol

関連する反応

Formation of Calcium Hydroxide Formation of Carbon Monoxide Formation of Nitrogen Dioxide Formation of Potassium Chloride Formation of Sodium Bicarbonate Formation of Sodium Peroxide Formation of Silicon Dioxide Formation of Tungsten Carbide Formation of Copper(II) Sulfide Fischer-Tropsch Synthesis (General)

Frequently Asked Questions

What is the equation for Formation of Aluminum Oxide?
The balanced equation is: 4Al + 3O₂ → 2Al₂O₃.
What type of reaction is Formation of Aluminum Oxide?
Formation of Aluminum Oxide is a synthesis reaction.
Is Formation of Aluminum Oxide exothermic or endothermic?
Formation of Aluminum Oxide is exothermic (releases energy). The enthalpy change (ΔH) is -3351.4 kJ/mol.